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Preparation method of ceramic-based multiporous composite material for water purification treatment

A composite material and ceramic technology, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. Problems such as poor capacity and poor film hanging effect, to achieve the effects of low cost, strong selective adsorption and improved removal efficiency

Inactive Publication Date: 2019-04-16
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is mainly used for the treatment of wastewater with relatively high concentration. For low-nutrient wastewater such as wastewater after standard upgrading, organic fillers are mostly large pores, and their ability to absorb organic matter and nutrient salts is relatively poor, while simple ceramic fillers have high density and pores. Few and small, with relatively few large pores, the effect on microbial film formation and nutrient enrichment is poor; activated carbon filler has a rich pore structure, but the film formation effect is not good, and it is easy to foul and block

Method used

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  • Preparation method of ceramic-based multiporous composite material for water purification treatment
  • Preparation method of ceramic-based multiporous composite material for water purification treatment
  • Preparation method of ceramic-based multiporous composite material for water purification treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First, 500 g of iron oxide, 600 g of silicon oxide, and 2000 ml of a starch solution with a mass concentration of 1% were added to a ball mill tank, and ball milled for 3.5 hours. Secondly, ball milling product and corn stalks (quality 300g, particle size are 400-600 μm, wherein the maximum particle size is 500 μm, and 60% of the particle size is concentrated in the maximum particle size±50 μm) are transferred to the polyacrylamide Solution (mass concentration is 1 ‰, volume 4000ml) in the mixing bucket, stir evenly. Alumina powder (quality 9000g, particle diameter is 50-340 μm, and wherein the maximum particle diameter is 180 μm, and 70% of the particle diameter is concentrated in the maximum particle diameter ± 30 μm) is added into the mixing tank and stirred evenly before granulation (granulation) diameter 4mm). Roast the granular material at 1250°C for 2.0h under a nitrogen atmosphere. After the roasting, wait until the temperature drops to room temperature and soa...

Embodiment 2

[0021] First, 500 g of iron oxide, 600 g of silicon oxide, and 2000 ml of a starch solution with a mass concentration of 10% were added to a ball milling tank, and ball milled for 3.5 hours. Secondly ball milling product and corn stalk (quality 600g, particle diameter is 400-600 μm particle diameter is in 400-600 μ m, and wherein most can particle diameter is 500 μ m, and the particle diameter of 60% concentrates on most can particle diameter ± 50 μ m) transfers to In a mixing bucket filled with polyacrylamide solution (mass concentration 1‰, volume 4000ml), stir evenly. Alumina powder (quality 9000g, particle diameter is 50-340 μm, and wherein the maximum particle diameter is 180 μm, and 70% of the particle diameter is concentrated in the maximum particle diameter ± 30 μm) is added into the mixing tank and stirred evenly before granulation (granulation) diameter 4mm). The granular material was calcined at 1250°C for 2.0 hours under a nitrogen atmosphere, after the calcined t...

Embodiment 3

[0024] First, 500 g of iron oxide, 600 g of silicon oxide, and 2000 ml of a starch solution with a mass concentration of 20% were added to a ball mill jar, and ball milled for 3.5 hours. Secondly, the ball mill product and corn stalks (300g in quality, 60-300 μm in particle size, wherein the maximum particle size is 180 μm, and 60% of the particle diameters are concentrated in the maximum particle size ± 50 μm) are transferred to the polyacrylamide solution. (mass concentration is 1‰, volume 4000ml) mixing tank, stir evenly. Alumina powder (quality 9000g, particle diameter is 50-340 μm, and wherein the maximum particle diameter is 180 μm, and 70% of the particle diameter is concentrated in the maximum particle diameter ± 30 μm) is added into the mixing tank and stirred evenly before granulation (granulation) diameter 4mm). The granular material was roasted at 1250°C for 2.0 hours under a nitrogen atmosphere. After the roasting, when the temperature dropped to room temperature...

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Abstract

The invention discloses a preparation method of a ceramic-based multiporous composite material for water purification treatment. The preparation method comprises the following steps that iron oxide, silicon oxide and a starch solution of which the mass concentration is 1-20% are mixed and then ball-milled for 3-5 h; the obtained product and a polyacrylamide solution of which the mass concentrationis 0.08-0.12% are uniformly mixed and then stirred with aluminum oxide powder, uniform stirring is carried out, wherein the particle size of the aluminum oxide powder is 13-600 micrometers, and the most probable particle size is 50-500 micrometers; pelleting is carried out to obtain spherical particles of 4-10 mm, and then roasting is carried out for 2-5 h at 400-1500 DEG C under the atmosphere of nitrogen; finally, the roasted product is placed in hydrogen peroxide of which the concentration is 4-6%, and after impregnation is carried out for 0.2-1 h, drying is carried out to obtain the ceramic-based multiporous composite material. The preparation method of the ceramic-based multiporous composite material for the water purification treatment has the advantages that the preparation methodis simple, the cost is low, the prepared ceramic-based multiporous composite material for water purification is larger in pore volume and abundant in pore structure, organic matter, nitrogen, phosphorus and other substances enriched in sewage can be effectively absorbed, the treatment effect of the sewage is good, and the organic matter, the nitrogen, the phosphorus, heavy metal and other substances can be effectively removed.

Description

technical field [0001] The invention relates to the fields of composite materials and water treatment materials, in particular to a preparation method of a ceramic-based porous composite material for water purification treatment. Background technique [0002] The study of porous materials is an important branch of material science research. It plays an increasingly important role in petrochemical, fine chemical, pharmaceutical, semiconductor and other high-tech industries. The common characteristics of porous materials are low density, high porosity, and large specific surface area. According to the definition of the International Organization of Pure and Applied Chemistry (IUPAC): pores with a diameter of less than 2nm are called micropores, those with a diameter of more than 2nm and less than 50nm are called mesopores, and those with a diameter of more than 50nm are called macropores. Generally speaking, if the pore size of the material is small, the gas permeability is ...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/42C02F3/30C02F101/10C02F101/16C02F101/30
CPCC02F1/28C02F1/42C02F3/30C02F2001/425C02F2101/10C02F2101/16C02F2101/30
Inventor 郝润秋李亮付春明郝亚超张莹张成凯周立山
Owner CNOOC TIANJIN CHEM RES & DESIGN INST